Burner for liquid fuel.



bro. 859,926.

- EATBNTED JUL W. DIEGKMANN @L P. o. 0R

MROD. t BURNER POR LIQUID FUEL.

APPLIoATIoN FILED un. 23. 190e.

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Y 16, f90?. j

35 nozzle, one main object of which is lo supply air for UNITEDsrr/rpns; PATENT onirica WILHELM DIECKMANN, OF EDLNTON, AND FREDERICK CHARLES ORMROD, OF WALTHABL STOW, ENGLANDfSAID ORMROD ASSIGNOR 'IO-JAMES ANDREW CURLE, ENGLAND, AND STEPHEN FRANK STACKARD, OF MIDDLESEX, ENG LAND.

Ol" WOODFORD,

BURNER FORLIQUID FUEL. j

' Patented `muy 16,1907'.l

i Application filed January 28,1906. 'Serial Nor 297,437.

'1' o all lwhom it may concern:

Be it known that'we, WILHELM DIECKMANN, a subject of the German Emperor, residing at Edmonton, Middlesex,` England, and Fnnnnmcx Guantes' ORM-A non, a subject of the King of England,P residing at Waly thalnstow,l Essex, England, have invented certain new and useful Improvements in Burners for Liquid Fuel, j of which the following is a specification; This invention relates to burners for liquid fuel and has for vitsobject to effect an econoiny'in working in combination with simplicity of construction and ready adjustment.

kAccording to this invention the burner Mconiprises/l three concentric nozzlesthimt for'the supply of air or other gas, the intermediate one for fuel and the outer one for air. In one construction the fuel nozzle is of tapered forni and the central nozzle is in effect a hollow needle valve which is adjustable longitudinally within the fuel nozzle and can be used not onlyvtovary the opening but also to entirely shutoff the flow of fuel.

The intermediate or fuel nozzle lies within a. cylindrical casing provided with an annular opening around the nozzle. Air is supplied under pressure to this casing and issues around the nozzle.

In operation the liquid fuel is supplied to the intermediate nozzle under gravity or ih some cases under pressure, Air under pressure is supplied to the `hollow needle valve and also to the outer casing.v 'lhe effect of the air jets on the oil is to cause a very complete atomiz-.ttion as theicentral air jetcauses the oil todiverge in a spray which is met by the converging annular jet of air from the outer casing and this spray is -still further broken up. V

Preferably a low pressure ol' air is used in the outer neombustion, while a higher pressure is employed in the innermost nozzle forpurposcs of inducingcurrent in and spreading of the-fuel. Y 4

`The central nozzle and the tube constituting what has been previously termed the hollow needle valve conveniently passes through a. bushing at the end of the. fuel nozzlc, thisbushing being partly screwthreaded to engage willi the correspoinling screw thread formed on the air tube. A further bushing or bearing piece is conveniently disposed a short distance within the nozzle andl a 'third bearing piece which is perforated or formed as a spider lies towards the outer end of the fucl nozzle. "lhe hollow needle is thus held steadily against` any vibration and is mainnozzle and air to the outer casing through lateral open:

tained central. 'lhe screw-threznl previously referred to enables the necessary longitudinal adjust-ment of the needle when rotation is imparted to it.

Fuel is conveniently supplied to the intermediate ings. v. v A The hollow needle valve is convenientlyvpmvided with a union piece to enable it to be connected at will either to an air supply or to a gris container front-'which for example, oxygen may be 4supplied under pressure.' This enables this nozzle. toffullil" the function of a stand-by llame *for/lighting up purposes. Other gas maymsed if desired Where special `Qualities of flame are/required. This hollow needle of course! carries some form of hand wheel or other device to enable i'tlto be rotated and the necessary :adjustment of the burner, effected. j i l The orifice through which air issues'fronirthe vouter casing around the fuel nozzle may be,taperedflaredorv otherwise shaped as found desirablef toire/construe? tion the orifice has a double taperbein reduced about 70 the center of the thickness ofthe/surrounding plate :mdf 7"( being enlarged both on the inner and outer` sides...

It willbe appreciated froml the above description that the burner is simple in construction comprising merely the three main portions, namely theouter easing to which screws the fuel nozzle Vand the central tubular valve which screws into the bushingsqcarried by or forming part of the fuel nozzle. There is thus nothing to get out of order and damaged parts can readily be'rcplaced. To facilitate this the end or ae, tual nozzle portion/ of the hollow needle may be made detachable so that if it is damaged' through heat a new nozzle can readily be put on.

Various shapes -and sizes of nozzle may be provided and by their interchangeahility the dir-clion, shape and intensity of the spray and fiume can be modified.

A burner, embodying the invention/in a. preferred form will now be described, by way of example, with reference to the accompanying drawings, in which:-

Figure l is an elevation; Aand Fig. y2a central longitudiinl section of a burner accorr'lingrto thisinvention;

Fig. 3 is adetail illustrating a modified construction of mouth picco for the outer nozzle; Fig. 4 is an elevation of an innermost nozzle detached, with a removable moutl. piece; and Fig. 5 is an end view of Fig. 4.

Like reference signs indicate `like parts' in all the figures. i i

A is the outer nozzle, which constitutes a casing for the intermediate nozzle B, fastened intoits rear end, f 'conveniently by screw threads as shown in Fig.` 2; l10() The` wall of the nozzle A is provided-with a. hollow boss v A2 for the supply of air, the boss being preferably screw-threaded to allow of its connection with any convenient s ource of supply, if it be desired to use air .under pressure.

The month piece of the nozzle may be formed by a re' movable plate Al having a central orifice A3. This orifice conforms in shape to the outer wall of the mouth piece B1 of the intermediate nozzle, so as to leave a ring-shaped passage for the air all round the said mouth piece. This orioe may be flared from within outwards,

as shown in Fig. 2, or with a double flare as shown in The intermediate nozzle B is provided with a hollow boss B2 on its side wall, for the supply of fuel to the nozzle; the boss is screw-threaded internally, as shown in Fig. 2, or otherwise arranged to be conveniently connected with a convenient supply of fuel.

Preferably the mouth piece Bl o thenozzle is formed separately rom'the body, and is secured thereto in a nipple,'as shown in Fig. 2. ,Y As shown in the figure the convenient manner, for example by a screw-threaded mouth piece is circular in cross-section and tapered but it may be oval or otherwise shaped.

.B3 closes the gland.

As shown in Fig. 2, the mouth piece of the nozzle() constitutes a needle valve, which may be used to regu- A, laten the supply of fuel or entirely-cut it off. To give elidwise movement to the nozzle, the plug B3 is hol- Alowed out and screw-threaded toreceive a corresponding threaded portion C4 of the nozzle, a round head C3 being provided for convenience in rotating the same.

A headed plug The end of the nozzle C is preferably screw-threaded to receive a coupling of a known character, to enable 4 it to be readily connected to an air supply or to an oxygen or other gas reservoir. v i. 3

'The mouth-piece Cl of the nozzle Cmay be made interchangeable, as are the mouth-pieces of the other two, In Figs. 4 and 5 a `convenient construction is 4 shown, more particularly adapted for use when the mouth-piece isoval or otherwise so shaped as not to permit of rotation in the fuel nozzle. f The mouth-piece Q5 in this case is oval in cross section, the/nozzle body being circular. The front end oi the nozzle body is re- 5 duced in diameter to fit linto a recess ormedfixrthe end of the mouth-piece, andiseprovidedmth a. cir'cumierentiahgroovelvhileftlie wall of the mouth-piece is bored to receive a'piiirC which `fitsinto the groove, v preventing ondwise movement relative to each other 5 of the mouth-piece and body, while the latter can be rotated-independently of the mouth-piece to give endwise movement to both. In this ,casca guide-piece or spider (such as B in Fig. 2) would'be positioned, or other means provided, so as to hold the mouth-piece 6 from any possible rotary movement.

What we claim as our invention and desire to secure by LettersPatent is:-'- A i In a liquid fuel burner having `three concentrically nr,- ranged nozzles, Athe combination with n circular inter- 6 mediate nozzle oi un innermost nozzle having an oval removable mouth-piece which nets as the valve'to control the .I

WILHELM DICKMANN. FREDERICK CHARLES onMRoD.

Witnesses Wir. JN0. TENNANT, Hanni B. Brumm. 

